Vulkan/Parallelism/ProcessManager.py

109 lines
4.2 KiB
Python

from multiprocessing import Queue, Lock
from multiprocessing.managers import BaseManager, NamespaceProxy
from typing import Dict, Union
from Config.Singleton import Singleton
from discord import Guild, Interaction
from discord.ext.commands import Context
from Parallelism.PlayerProcess import PlayerProcess
from Music.Playlist import Playlist
from Parallelism.ProcessInfo import ProcessInfo
from Parallelism.Commands import VCommands, VCommandsType
class ProcessManager(Singleton):
"""
Manage all running player process, creating and storing them for future calls
Deal with the creation of shared memory
"""
def __init__(self) -> None:
if not super().created:
VManager.register('Playlist', Playlist)
self.__manager = VManager()
self.__manager.start()
self.__playersProcess: Dict[Guild, ProcessInfo] = {}
def setPlayerInfo(self, guild: Guild, info: ProcessInfo):
self.__playersProcess[guild.id] = info
def getPlayerInfo(self, guild: Guild, context: Union[Context, Interaction]) -> ProcessInfo:
"""Return the process info for the guild, if not and context is a instance
of discord.Context then create one, else return None"""
try:
if isinstance(context, Interaction):
if guild.id not in self.__playersProcess.keys():
return None
else:
return self.__playersProcess[guild.id]
if guild.id not in self.__playersProcess.keys():
self.__playersProcess[guild.id] = self.__createProcessInfo(context)
else:
# If the process has ended create a new one
if not self.__playersProcess[guild.id].getProcess().is_alive():
self.__playersProcess[guild.id] = self.__recreateProcess(context)
return self.__playersProcess[guild.id]
except Exception as e:
print(f'[Error In GetPlayerContext] -> {e}')
def resetProcess(self, guild: Guild, context: Context) -> None:
"""Restart a running process, already start it to return to play"""
if guild.id not in self.__playersProcess.keys():
return None
# Recreate the process keeping the playlist
newProcessInfo = self.__recreateProcess(context)
newProcessInfo.getProcess().start() # Start the process
# Send a command to start the play again
playCommand = VCommands(VCommandsType.PLAY)
newProcessInfo.getQueue().put(playCommand)
self.__playersProcess[guild.id] = newProcessInfo
def getRunningPlayerInfo(self, guild: Guild) -> ProcessInfo:
"""Return the process info for the guild, if not, return None"""
if guild.id not in self.__playersProcess.keys():
return None
return self.__playersProcess[guild.id]
def __createProcessInfo(self, context: Context) -> ProcessInfo:
guildID: int = context.guild.id
textID: int = context.channel.id
voiceID: int = context.author.voice.channel.id
authorID: int = context.author.id
playlist: Playlist = self.__manager.Playlist()
lock = Lock()
queue = Queue()
process = PlayerProcess(context.guild.name, playlist, lock, queue,
guildID, textID, voiceID, authorID)
processInfo = ProcessInfo(process, queue, playlist, lock)
return processInfo
def __recreateProcess(self, context: Context) -> ProcessInfo:
"""Create a new process info using previous playlist"""
guildID: int = context.guild.id
textID: int = context.channel.id
voiceID: int = context.author.voice.channel.id
authorID: int = context.author.id
playlist: Playlist = self.__playersProcess[guildID].getPlaylist()
lock = Lock()
queue = Queue()
process = PlayerProcess(context.guild.name, playlist, lock, queue,
guildID, textID, voiceID, authorID)
processInfo = ProcessInfo(process, queue, playlist, lock)
return processInfo
class VManager(BaseManager):
pass
class VProxy(NamespaceProxy):
_exposed_ = ('__getattribute__', '__setattr__', '__delattr__')